Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

William Laine Sinnett, MD

Individual provider Internal Medicine Physician · NPI 1912327719

William Laine Sinnett, MD practises Internal Medicine in Minneapolis, Minnesota. Graduated from University of Minnesota Medical School in 2014, 12 years ago. Practices with Hennepin Healthcare System Inc, a 903-clinician group and accepts Medicare assignment. Licensed in Minnesota.

Years since qualifying
12
Trained at
University of Minnesota Medical School
Licensed in
MN
In the registry since
2014
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

701 Park Ave South Medicine - Hennepin County Medical Ctr
Minneapolis, MN 55415-1829
Phone: (612) 873-6963
Fax: (612) 904-4358
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 61799 (MN)

Record details

NPI number1912327719
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 18, 2014
Last updated in NPPESAugust 15, 2017

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated 2014 (12 years in practice)
Group practice Hennepin Healthcare System Inc — 903 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients71
Services billed 259 a service is one billed item, such as a visit, a test or a procedure
Average patient age66

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Hennepin Healthcare System Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 903 clinicians in the practice; 12 are shown here.

Other providers in Minneapolis